August 2024 - Linux-stable-mirror

[PATCH] usb: dwc3: qcom: fix NULL pointer dereference on dwc3_qcom_read_usb2_speed

by Faisal Hassan

Null pointer dereference occurs when accessing 'hcd' to detect speed from dwc3_qcom_suspend after the xhci-hcd is unbound. To avoid this issue, ensure to check for NULL in dwc3_qcom_read_usb2_speed. echo xhci-hcd.0.auto > /sys/bus/platform/drivers/xhci-hcd/unbind xhci_plat_remove() -> usb_put_hcd() -> hcd_release() -> kfree(hcd) Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060 Call trace: dwc3_qcom_suspend.part.0+0x17c/0x2d0 [dwc3_qcom] dwc3_qcom_runtime_suspend+0x2c/0x40 [dwc3_qcom] pm_generic_runtime_suspend+0x30/0x44 __rpm_callback+0x4c/0x190 rpm_callback+0x6c/0x80 rpm_suspend+0x10c/0x620 pm_runtime_work+0xc8/0xe0 process_one_work+0x1e4/0x4f4 worker_thread+0x64/0x43c kthread+0xec/0x100 ret_from_fork+0x10/0x20 Fixes: c5f14abeb52b ("usb: dwc3: qcom: fix peripheral and OTG suspend") Cc: stable(a)vger.kernel.org Signed-off-by: Faisal Hassan <quic_faisalh(a)quicinc.com> --- drivers/usb/dwc3/dwc3-qcom.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 88fb6706a18d..0c7846478655 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -319,13 +319,15 @@ static bool dwc3_qcom_is_host(struct dwc3_qcom *qcom) static enum usb_device_speed dwc3_qcom_read_usb2_speed(struct dwc3_qcom *qcom, int port_index) { struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3); - struct usb_device *udev; + struct usb_device __maybe_unused *udev; struct usb_hcd __maybe_unused *hcd; /* * FIXME: Fix this layering violation. */ hcd = platform_get_drvdata(dwc->xhci); + if (!hcd) + return USB_SPEED_UNKNOWN; #ifdef CONFIG_USB udev = usb_hub_find_child(hcd->self.root_hub, port_index + 1); -- 2.17.1

4 months

5
9
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[PATCH] pidfd: prevent creation of pidfds for kthreads

by Christian Brauner

It's currently possible to create pidfds for kthreads but it is unclear what that is supposed to mean. Until we have use-cases for it and we figured out what behavior we want block the creation of pidfds for kthreads. Fixes: 32fcb426ec00 ("pid: add pidfd_open()") Cc: stable(a)vger.kernel.org Signed-off-by: Christian Brauner <brauner(a)kernel.org> --- kernel/fork.c | 25 ++++++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-) diff --git a/kernel/fork.c b/kernel/fork.c index cc760491f201..18bdc87209d0 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2053,11 +2053,24 @@ static int __pidfd_prepare(struct pid *pid, unsigned int flags, struct file **re */ int pidfd_prepare(struct pid *pid, unsigned int flags, struct file **ret) { - bool thread = flags & PIDFD_THREAD; - - if (!pid || !pid_has_task(pid, thread ? PIDTYPE_PID : PIDTYPE_TGID)) + if (!pid) return -EINVAL; + scoped_guard(rcu) { + struct task_struct *tsk; + + if (flags & PIDFD_THREAD) + tsk = pid_task(pid, PIDTYPE_PID); + else + tsk = pid_task(pid, PIDTYPE_TGID); + if (!tsk) + return -EINVAL; + + /* Don't create pidfds for kernel threads for now. */ + if (tsk->flags & PF_KTHREAD) + return -EINVAL; + } + return __pidfd_prepare(pid, flags, ret); } @@ -2403,6 +2416,12 @@ __latent_entropy struct task_struct *copy_process( if (clone_flags & CLONE_PIDFD) { int flags = (clone_flags & CLONE_THREAD) ? PIDFD_THREAD : 0; + /* Don't create pidfds for kernel threads for now. */ + if (args->kthread) { + retval = -EINVAL; + goto bad_fork_free_pid; + } + /* Note that no task has been attached to @pid yet. */ retval = __pidfd_prepare(pid, flags, &pidfile); if (retval < 0) -- 2.43.0

4 months

6
12
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[PATCH RESEND] pinctrl: single: fix potential NULL dereference in pcs_get_function()

by Ma Ke

pinmux_generic_get_function() can return NULL and the pointer 'function' was dereferenced without checking against NULL. Add checking of pointer 'function' in pcs_get_function(). Found by code review. Cc: stable(a)vger.kernel.org Fixes: 571aec4df5b7 ("pinctrl: single: Use generic pinmux helpers for managing functions") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- drivers/pinctrl/pinctrl-single.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index 4c6bfabb6bd7..4da3c3f422b6 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -345,6 +345,8 @@ static int pcs_get_function(struct pinctrl_dev *pctldev, unsigned pin, return -ENOTSUPP; fselector = setting->func; function = pinmux_generic_get_function(pctldev, fselector); + if (!function) + return -EINVAL; *func = function->data; if (!(*func)) { dev_err(pcs->dev, "%s could not find function%i\n", -- 2.25.1

4 months

2
2
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Please apply commit 31e97d7c9ae3 ("media: solo6x10: replace max(a, min(b, c)) by clamp(b, a, c)") to 6.1.y

by Salvatore Bonaccorso

Hi While building 6.1.106 based verson for Debian I noticed that all 32bit architectures did fail to build: https://buildd.debian.org/status/fetch.php?pkg=linux&arch=i386&ver=6.1.106-… The problem is known as https://lore.kernel.org/lkml/18c6df0d-45ed-450c-9eda-95160a2bbb8e@gmail.com/ This now affects as well 6.1.y as the commits 867046cc7027 ("minmax: relax check to allow comparison between unsigned arguments and signed constants") and 4ead534fba42 ("minmax: allow comparisons of 'int' against 'unsigned char/short'") were backported to 6.1.106. Thus, can you please pick as well 31e97d7c9ae3 ("media: solo6x10: replace max(a, min(b, c)) by clamp(b, a, c)") for 6.1.y? Note I suspect it is required as well for 5.15.164 (as the commits were backported there as well and 31e97d7c9ae3 now missing there). Regards, Salvatore

4 months

2
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[PATCH v3 01/10] OPP: Fix support for required OPPs for multiple PM domains

by Ulf Hansson

It has turned out that having _set_required_opps() to recursively call dev_pm_opp_set_opp() to set the required OPPs, doesn't really work as well as we expected. More precisely, at each recursive call to dev_pm_opp_set_opp() we are changing an OPP for a required_dev that belongs to a required-OPP table. The problem with this, is that we may have several devices sharing the same required-OPP table, which leads to an incorrect behaviour in regards to aggregating the per device votes. To fix the problem for a required-OPP table belonging to a PM domain, which is the only existing usecase for now, let's simply replace the call to dev_pm_opp_set_opp() in _set_required_opps() by a call to _set_opp_level(). Moving forward we may potentially need to add support for other types of required-OPP tables. In this case, the aggregation needs to be thought of. Fixes: e37440e7e2c2 ("OPP: Call dev_pm_opp_set_opp() for required OPPs") Cc: stable(a)vger.kernel.org Signed-off-by: Ulf Hansson <ulf.hansson(a)linaro.org> --- Changes in v3: - Clarified the commitmsg. Changes in v2: - Clarified the commitmsg. - Addressed some comments from Viresh. - Drop calls to _add_opp_dev() for required_devs. --- drivers/opp/core.c | 56 ++++++++++++++++++---------------------------- 1 file changed, 22 insertions(+), 34 deletions(-) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 5f4598246a87..494f8860220d 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1061,6 +1061,27 @@ static int _set_opp_bw(const struct opp_table *opp_table, return 0; } +static int _set_opp_level(struct device *dev, struct dev_pm_opp *opp) +{ + unsigned int level = 0; + int ret = 0; + + if (opp) { + if (opp->level == OPP_LEVEL_UNSET) + return 0; + + level = opp->level; + } + + /* Request a new performance state through the device's PM domain. */ + ret = dev_pm_domain_set_performance_state(dev, level); + if (ret) + dev_err(dev, "Failed to set performance state %u (%d)\n", level, + ret); + + return ret; +} + /* This is only called for PM domain for now */ static int _set_required_opps(struct device *dev, struct opp_table *opp_table, struct dev_pm_opp *opp, bool up) @@ -1091,7 +1112,7 @@ static int _set_required_opps(struct device *dev, struct opp_table *opp_table, if (devs[index]) { required_opp = opp ? opp->required_opps[index] : NULL; - ret = dev_pm_opp_set_opp(devs[index], required_opp); + ret = _set_opp_level(devs[index], required_opp); if (ret) return ret; } @@ -1102,27 +1123,6 @@ static int _set_required_opps(struct device *dev, struct opp_table *opp_table, return 0; } -static int _set_opp_level(struct device *dev, struct dev_pm_opp *opp) -{ - unsigned int level = 0; - int ret = 0; - - if (opp) { - if (opp->level == OPP_LEVEL_UNSET) - return 0; - - level = opp->level; - } - - /* Request a new performance state through the device's PM domain. */ - ret = dev_pm_domain_set_performance_state(dev, level); - if (ret) - dev_err(dev, "Failed to set performance state %u (%d)\n", level, - ret); - - return ret; -} - static void _find_current_opp(struct device *dev, struct opp_table *opp_table) { struct dev_pm_opp *opp = ERR_PTR(-ENODEV); @@ -2457,18 +2457,6 @@ static int _opp_attach_genpd(struct opp_table *opp_table, struct device *dev, } } - /* - * Add the virtual genpd device as a user of the OPP table, so - * we can call dev_pm_opp_set_opp() on it directly. - * - * This will be automatically removed when the OPP table is - * removed, don't need to handle that here. - */ - if (!_add_opp_dev(virt_dev, opp_table->required_opp_tables[index])) { - ret = -ENOMEM; - goto err; - } - opp_table->required_devs[index] = virt_dev; index++; name++; -- 2.34.1

4 months

1
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[PATCH 1/3] thermal: of: Fix OF node leak in thermal_of_trips_init() error path

by Krzysztof Kozlowski

Terminating for_each_child_of_node() loop requires dropping OF node reference, so bailing out after thermal_of_populate_trip() error misses this. Solve the OF node reference leak with scoped for_each_child_of_node_scoped(). Fixes: d0c75fa2c17f ("thermal/of: Initialize trip points separately") Cc: <stable(a)vger.kernel.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> --- drivers/thermal/thermal_of.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c index aa34b6e82e26..30f8d6e70484 100644 --- a/drivers/thermal/thermal_of.c +++ b/drivers/thermal/thermal_of.c @@ -125,7 +125,7 @@ static int thermal_of_populate_trip(struct device_node *np, static struct thermal_trip *thermal_of_trips_init(struct device_node *np, int *ntrips) { struct thermal_trip *tt; - struct device_node *trips, *trip; + struct device_node *trips; int ret, count; trips = of_get_child_by_name(np, "trips"); @@ -150,7 +150,7 @@ static struct thermal_trip *thermal_of_trips_init(struct device_node *np, int *n *ntrips = count; count = 0; - for_each_child_of_node(trips, trip) { + for_each_child_of_node_scoped(trips, trip) { ret = thermal_of_populate_trip(trip, &tt[count++]); if (ret) goto out_kfree; -- 2.43.0

4 months

5
14
0 0

[PATCH] binder: fix UAF caused by offsets overwrite

by Carlos Llamas

Binder objects are processed and copied individually into the target buffer during transactions. Any raw data in-between these objects is copied as well. However, this raw data copy lacks an out-of-bounds check. If the raw data exceeds the data section size then the copy overwrites the offsets section. This eventually triggers an error that attempts to unwind the processed objects. However, at this point the offsets used to index these objects are now corrupted. Unwinding with corrupted offsets can result in decrements of arbitrary nodes and lead to their premature release. Other users of such nodes are left with a dangling pointer triggering a use-after-free. This issue is made evident by the following KASAN report (trimmed): ================================================================== BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x19c Write of size 4 at addr ffff47fc91598f04 by task binder-util/743 CPU: 9 UID: 0 PID: 743 Comm: binder-util Not tainted 6.11.0-rc4 #1 Hardware name: linux,dummy-virt (DT) Call trace: _raw_spin_lock+0xe4/0x19c binder_free_buf+0x128/0x434 binder_thread_write+0x8a4/0x3260 binder_ioctl+0x18f0/0x258c [...] Allocated by task 743: __kmalloc_cache_noprof+0x110/0x270 binder_new_node+0x50/0x700 binder_transaction+0x413c/0x6da8 binder_thread_write+0x978/0x3260 binder_ioctl+0x18f0/0x258c [...] Freed by task 745: kfree+0xbc/0x208 binder_thread_read+0x1c5c/0x37d4 binder_ioctl+0x16d8/0x258c [...] ================================================================== To avoid this issue, let's check that the raw data copy is within the boundaries of the data section. Fixes: 6d98eb95b450 ("binder: avoid potential data leakage when copying txn") Cc: Todd Kjos <tkjos(a)google.com> Cc: stable(a)vger.kernel.org Signed-off-by: Carlos Llamas <cmllamas(a)google.com> --- drivers/android/binder.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 905290c98c3c..e8643c69d426 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -3422,6 +3422,7 @@ static void binder_transaction(struct binder_proc *proc, */ copy_size = object_offset - user_offset; if (copy_size && (user_offset > object_offset || + object_offset > tr->data_size || binder_alloc_copy_user_to_buffer( &target_proc->alloc, t->buffer, user_offset, -- 2.46.0.295.g3b9ea8a38a-goog

4 months

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+ revert-mm-skip-cma-pages-when-they-are-not-available-update.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: revert-mm-skip-cma-pages-when-they-are-not-available-update has been added to the -mm mm-hotfixes-unstable branch. Its filename is revert-mm-skip-cma-pages-when-they-are-not-available-update.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Usama Arif <usamaarif642(a)gmail.com> Subject: revert-mm-skip-cma-pages-when-they-are-not-available-update Date: Wed, 21 Aug 2024 20:26:07 +0100 also revert b7108d66318a ("Multi-gen LRU: skip CMA pages when they are not eligible"), per Johannes Link: https://lkml.kernel.org/r/9060a32d-b2d7-48c0-8626-1db535653c54@gmail.com Link: https://lkml.kernel.org/r/357ac325-4c61-497a-92a3-bdbd230d5ec9@gmail.com Fixes: 5da226dbfce3 ("mm: skip CMA pages when they are not available") Signed-off-by: Usama Arif <usamaarif642(a)gmail.com> Acked-by: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Bharata B Rao <bharata(a)amd.com> Cc: Breno Leitao <leitao(a)debian.org> Cc: David Hildenbrand <david(a)redhat.com> Cc: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Matthew Wilcox <willy(a)infradead.org> Cc: Rik van Riel <riel(a)surriel.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: Yu Zhao <yuzhao(a)google.com> Cc: Zhaoyang Huang <huangzhaoyang(a)gmail.com> Cc: Zhaoyang Huang <zhaoyang.huang(a)unisoc.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/vmscan.c | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-) --- a/mm/vmscan.c~revert-mm-skip-cma-pages-when-they-are-not-available-update +++ a/mm/vmscan.c @@ -4253,25 +4253,6 @@ void lru_gen_soft_reclaim(struct mem_cgr #endif /* CONFIG_MEMCG */ -#ifdef CONFIG_CMA -/* - * It is waste of effort to scan and reclaim CMA pages if it is not available - * for current allocation context. Kswapd can not be enrolled as it can not - * distinguish this scenario by using sc->gfp_mask = GFP_KERNEL - */ -static bool skip_cma(struct folio *folio, struct scan_control *sc) -{ - return !current_is_kswapd() && - gfp_migratetype(sc->gfp_mask) != MIGRATE_MOVABLE && - folio_migratetype(folio) == MIGRATE_CMA; -} -#else -static bool skip_cma(struct folio *folio, struct scan_control *sc) -{ - return false; -} -#endif - /****************************************************************************** * the eviction ******************************************************************************/ @@ -4319,7 +4300,7 @@ static bool sort_folio(struct lruvec *lr } /* ineligible */ - if (zone > sc->reclaim_idx || skip_cma(folio, sc)) { + if (zone > sc->reclaim_idx) { gen = folio_inc_gen(lruvec, folio, false); list_move_tail(&folio->lru, &lrugen->folios[gen][type][zone]); return true; _ Patches currently in -mm which might be from usamaarif642(a)gmail.com are revert-mm-skip-cma-pages-when-they-are-not-available.patch revert-mm-skip-cma-pages-when-they-are-not-available-update.patch

4 months

1
0
0 0

[PATCH RESEND] drm/amd/display: avoid using null object of framebuffer

by Ma Ke

Instead of using state->fb->obj[0] directly, get object from framebuffer by calling drm_gem_fb_get_obj() and return error code when object is null to avoid using null object of framebuffer. Cc: stable(a)vger.kernel.org Fixes: 5d945cbcd4b1 ("drm/amd/display: Create a file dedicated to planes") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c index a83bd0331c3b..5cb11cc2d063 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c @@ -28,6 +28,7 @@ #include <drm/drm_blend.h> #include <drm/drm_gem_atomic_helper.h> #include <drm/drm_plane_helper.h> +#include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_fourcc.h> #include "amdgpu.h" @@ -935,10 +936,14 @@ static int amdgpu_dm_plane_helper_prepare_fb(struct drm_plane *plane, } afb = to_amdgpu_framebuffer(new_state->fb); - obj = new_state->fb->obj[0]; + obj = drm_gem_fb_get_obj(new_state->fb, 0); + if (!obj) { + DRM_ERROR("Failed to get obj from framebuffer\n"); + return -EINVAL; + } + rbo = gem_to_amdgpu_bo(obj); adev = amdgpu_ttm_adev(rbo->tbo.bdev); - r = amdgpu_bo_reserve(rbo, true); if (r) { dev_err(adev->dev, "fail to reserve bo (%d)\n", r); -- 2.25.1

4 months

2
3
0 0

FAILED: patch "[PATCH] riscv: entry: always initialize regs->a0 to -ENOSYS" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 61119394631f219e23ce98bcc3eb993a64a8ea64 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024081917-flanked-clear-e564@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: 61119394631f ("riscv: entry: always initialize regs->a0 to -ENOSYS") 05d450aabd73 ("riscv: Support RANDOMIZE_KSTACK_OFFSET") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 61119394631f219e23ce98bcc3eb993a64a8ea64 Mon Sep 17 00:00:00 2001 From: Celeste Liu <coelacanthushex(a)gmail.com> Date: Thu, 27 Jun 2024 22:23:39 +0800 Subject: [PATCH] riscv: entry: always initialize regs->a0 to -ENOSYS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Otherwise when the tracer changes syscall number to -1, the kernel fails to initialize a0 with -ENOSYS and subsequently fails to return the error code of the failed syscall to userspace. For example, it will break strace syscall tampering. Fixes: 52449c17bdd1 ("riscv: entry: set a0 = -ENOSYS only when syscall != -1") Reported-by: "Dmitry V. Levin" <ldv(a)strace.io> Reviewed-by: Björn Töpel <bjorn(a)rivosinc.com> Cc: stable(a)vger.kernel.org Signed-off-by: Celeste Liu <CoelacanthusHex(a)gmail.com> Link: https://lore.kernel.org/r/20240627142338.5114-2-CoelacanthusHex@gmail.com Signed-off-by: Palmer Dabbelt <palmer(a)rivosinc.com> diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c index 05a16b1f0aee..51ebfd23e007 100644 --- a/arch/riscv/kernel/traps.c +++ b/arch/riscv/kernel/traps.c @@ -319,6 +319,7 @@ void do_trap_ecall_u(struct pt_regs *regs) regs->epc += 4; regs->orig_a0 = regs->a0; + regs->a0 = -ENOSYS; riscv_v_vstate_discard(regs); @@ -328,8 +329,7 @@ void do_trap_ecall_u(struct pt_regs *regs) if (syscall >= 0 && syscall < NR_syscalls) syscall_handler(regs, syscall); - else if (syscall != -1) - regs->a0 = -ENOSYS; + /* * Ultimately, this value will get limited by KSTACK_OFFSET_MAX(), * so the maximum stack offset is 1k bytes (10 bits).

4 months

2
1
0 0

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